Access 51offer.com. 英国|澳洲|美国留学,出国留学

name

value

score

weighting

FCP (First Contentful Paint)

Value6.7 s

2/100

10%

LCP (Largest Contentful Paint)

Value7.9 s

3/100

25%

SI (Speed Index)

Value13.9 s

1/100

10%

TBT (Total Blocking Time)

Value880 ms

32/100

30%

CLS (Cumulative Layout Shift)

Value0.948

3/100

15%

TTI (Time to Interactive)

Value14.0 s

10/100

10%

51offer.com

628 ms

www.51offer.com

1964 ms

global.css

1107 ms

1120 ms

vue.runtime.min.js

1343 ms

Our browser made a total of 125 requests to load all elements on the main page. We found that 3% of them (4 requests) were addressed to the original 51offer.com, 52% (65 requests) were made to S2.51offer.com and 22% (27 requests) were made to Static.51offer.com. The less responsive or slowest element that took the longest time to load (3.4 sec) relates to the external source S2.51offer.com.

Content Size

4.0 MB

After Optimization

3.1 MB

In fact, the total size of 51offer.com main page is 4.0 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 60% of websites need less resources to load. Images take 2.6 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 289.9 kB

Original 327.1 kB
After minification 241.5 kB
After compression 37.2 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 85.6 kB, which is 26% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 289.9 kB or 89% of the original size.

Image Optimization

-12%

Potential reduce by 322.0 kB

Original 2.6 MB
After minification 2.3 MB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, 51 Offer needs image optimization as it can save up to 322.0 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-31%

Potential reduce by 299.6 kB

Original 968.3 kB
After minification 968.3 kB
After compression 668.7 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 299.6 kB or 31% of the original size.

CSS Optimization

-28%

Potential reduce by 41.0 kB

Original 147.0 kB
After minification 147.0 kB
After compression 106.0 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. 51offer.com needs all CSS files to be minified and compressed as it can save up to 41.0 kB or 28% of the original size.

Requests Now

120

After Optimization

The browser has sent 120 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 51 Offer. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 36 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

High

Document doesn't use legible font sizes

Language and Encoding

Language Detected

ZH
Language Claimed

ZH
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 51offer.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it matches the claimed language. Our system also found out that 51offer.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

51offer.com

Open Graph description is not detected on the main page of 51 Offer. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks:

Report Summary

Performance

Accessibility

Best Practices

SEO

英国|澳洲|美国留学,出国留学 - 51offer让留学更简单

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

51offer.com

www.51offer.com

global.css

vue.runtime.min.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

51offer.com

www.51offer.com

global.css

vue.runtime.min.js

global.js

index.css

icon-phone.png

658913.jpg

icon-down.png

hold.png

help.png

uk.png

us.png

au.png

nz.png

wechatQ.png

app2vmnew.png

invite.png

logo.png

scan-app.png

guideRegist.png

show-offer.png

LanyonBuilding.jpg

aiSchool.png

GPA.png

abroad.png

famousTeacher.png

white.gif

England.jpg

Australia.jpg

America.jpg

NewZealand.jpg

Japan.jpg

Singapore.jpg

icons-weibo2.png

wexin.jpg

close.png

xcxpc_home.jpeg

success.png

app.0728e9f.js

hzTalk.js

dialog.js

main.js

global_menu_icon2.png